The Cities of Illinois

• Cahokia
• Cairo
• Calumet City
• Calumet Park
• Cambridge
• Camp Point
• Canton
• Carbondale
• Carlinville
• Carlock
• Carlyle
• Carmi
• Carol Stream
• Carpentersville

• Carrollton
• Carterville
• Carthage
• Cary
• Casey
• Caseyville
• Catlin
• Cave In Rock
• Centralia
• Cerro Gordo
• Champaign
• Chandlerville
• Channahon
• Charleston

• Chatham
• Chenoa
• Cherry Valley
• Chester
• Chicago
• Chicago Heights
• Chicago Ridge
• Chillicothe
• Chrisman
• Cicero
• Cissna Park
• Clarendon Hills
• Clayton
• Clifton

• Clinton
• Coal Valley
• Cobden
• Colfax
• Collinsville
• Columbia
• Country Club Hills
• Countryside
• Creal Springs
• Crest Hill
• Crestwood
• Crete
• Creve Coeur
• Crystal Lake

• Regional: United States: Illinois: Counties